I started out as a Windows fanboy. I thought Macs were a Niche product, and the users were in their own little world that could not coexist with PC's. I won't lie, its all true, except the coexisting part.
Frustrated with doing God knows what on XP, and chatting with a computer savvy friend on AIM, he suggested I try a mac. I resisted but was told that chances are, I'd like it,and in a worst case scenario, I'd just resell it to someone else.
So I bought a G4 PowerMac, found a VGA Apple LCD on ebay too, about 300 dollars or so invested. The computer had Tiger on it, and I fell in love, which I will detail in the next paragraph. I retained my Dell Latitude notebook and eventually found myself wanting OS X on the road. I bought a 12" G4 Powerbook and had three computers. Recently, I replaced my aging PowerMac with a C2D Mini, and the PowerBook with a Unibody MacBook. I'm also selling the Dell, since I find myself no longer needing Windows as much.
I fell in love with the Mac OS. The hardware is really irrelevant to me, but because Apple configures the hardware, they can fine tune the OS to take full advantage of, and be stable on the hardware.
Thats not to say Mac's don't crash, they do. Granted, the way OS X is structured, if your browser crashes, you CMD+OPT+ESC (Just like Window's Ctrl+Alt+Del) and you kill the crashed app. 90% of the time, the app instantly shuts down and offers to relaunch. sometimes is takes a few more seconds, and every so ofter an hard reboot is necessary, but who hasn't done that with a PC?
A lot of things in OS X just make sense. The System Preferences App, which is like your Windows Control Panel is clearly laid out, and if you want to change something, it's either there for changing, or you can't. In Control Panel, you can get lost in dialog box after dialog box.
In every windows app, there are some sort of options, or settings, or preferences choice in the menu bar, usually under tools, sometimes edit, who knows really. Everything in OS X is coded to have all the behind the scenes adjustables in the App's menu in the menu bar. If you're in Safari, just click Safari in the menu bar and then preferences. It's a little thing, but those mean the most sometimes.
The switch for me was hesitant at first. I was cautiously optimistic about OS X. That grew to a fascination, and eventual conversion. When I get around to putting the Dell on ebay, I will no longer own any non-apple branded computers. I do run Windows for Legacy PC's in parallels because some programs I like arent coded for OS X.
I'm not trying to say that OS X is definitively better. I feel liek it is in many regards, but thats the beauty of the Modern Mac. It can run windows, so you can retain your apps that are windows only. A mac is really the best of both worlds for me, and I think you should at least try. Dissing something and having never tried it is ignorant in most cases.
(I say most because I don't need to cut my arm off to know that it's probalby a bad idea, but I can't hate on Linux if I'v enever given it a chance)